Do you mean the next night in your dream or in waking life when you chickened out? More likely than not you are playing out the scenario in your sleep as a kind of practice run for when you are awake; if you chickened out in your dream it just means that you think you might chicken out when you actually try it, whether you do or not is up to you. Dreams don’t always have to mean something as such, often they are just reworking what you are already thinking about when you are awake.